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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
/* only check this many filenames */
#define MAX_FNAMES 1024
/* FILENAME.EXT\0 = 13 */
#define FNAME_LEN 13
// #define DUPNAME_DEBUG
static char filenames[MAX_FNAMES][FNAME_LEN];
static int fncount;
/* linear search, slow, but only happens once at startup */
int is_dup_filename(const char *newname) {
int i;
for(i = 0; i < fncount; i++)
if(strncmp(newname, filenames[i], FNAME_LEN - 1) == 0)
return 1;
strncpy(filenames[fncount++], newname, FNAME_LEN - 1);
return 0;
}
#ifdef DUPNAME_DEBUG
int main(int argc, char **argv) {
int i;
while(++argv, --argc)
printf("%s: %d\n", *argv, is_dup_filename(*argv));
printf("filenames[]\n");
for(i = 0; i < fncount; i++)
printf(" %s\n", filenames[i]);
return 0;
}
#endif
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